Studies show that improving handwashing at 10 of the world’s leading airports could slow the spread of infectious diseases.

On average, only 20 percent of people in airports have clean hands - hands washed with soap and water, not just rinsed. The other 80 percent are potentially contaminating everything they touch, from chair armrests, check-in kiosks, security checkpoint trays, and restroom doorknobs and faucets.